This study discussed the analysis of rectangular patch microstrip antenna with FR-4 substrate on 2-.3 G Hz frequency for LTE applications. The results of this test are expected to be useful for students or common people who need it. 4G is a development of technology that was previously 3G technology. With the existence of 4G technology, will help people easier to access data quickly anywhere anytime. To support 4G technology, an antenna that can support wireless communication is needed where the type of antenna that can provide this service is a microstrip antenna. Microstrip antenna is a type of antenna that has a thin board shape and has the advantage of working at very high frequencies. Microstrip antennas have advantages that lie in their small and light physical form with various patch shapes such as rectangles, squares, triangles. (triangular), circle (circular), ellipse (elliptical), circular ring. In this simulation and analysis process, using FR-4 substrate material at a frequency of 2.3GHz and AWR microwave office application for the measurement method. Antenna parameters are important in the design or analysis of an antenna because the antenna parameters are the benchmark f-or the ante-nna's performance. The parameters that being analyzed consists of return-lo-ss, Voltage Sta' nding Wa' ve-Ra' tio (VS' WR), an-d input impedance. The result i-s that the return loss value is -12.07dB below -9.54Db, the VSWR value is 1.664 which is the ideal value, while the Z impedance is 0.60707 and the imaginary value is 0.0802743.